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Old 11-14-2010, 08:04 PM
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Better 4cyl

Which engine is better a 22re or 2.5 amc?

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Old 11-14-2010, 08:11 PM   #2
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Don't have experience with either, but is neither an option?

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Old 11-15-2010, 12:33 AM   #3
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Which engine is better a 22re or 2.5 amc?
a better question 22re or I6 4.0L

you're talking about two indestructible engines, but if its a matter of the better of 2 4cyl engines... i dont have much experience with the 2.5 but my old 22re I could literally bang with a sledge and it would run.
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Old 11-15-2010, 02:01 AM   #4
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Which engine is better a 22re or 2.5 amc?
If you're tossing it in a jeep, I just say the 2.5 amc. You'll find more transmissions that will bolt right in, or use your existing.

I believe the AMC 150 might be slightly more powerful too.

Either way, you probably won't make a wrong decision. Both reliable engines. My grandfather drove his toyota pick up (with a 22re) until 245,000 until he decided he didn't need a truck. The engine had more miles left in it, body didn't though.
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Old 11-15-2010, 11:37 AM   #5
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The 22RE is definatly a great and reliable engine. Toyota guys live by them, and I cannot tell you how many I see on the local trails that are turning 38"+ size tires with the 22RE and very low t-case gears.

However the AMC/Jeep 2.5L to me has also proven to be a very reliable, and IMO has a little more low end torque.
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Old 11-15-2010, 11:52 AM   #6
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I havent had any experience with the 22RE but my old 2.5 was a beast. I beat the piss out of it for 30k before i traded up. Never gave me one mechanical problem, all it did was ask for more abuse.
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Old 11-15-2010, 11:58 AM   #7
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Chrysler 2.5's are junk....I have bought 10 jeeps in the last year with blown up 2.5's in um. If you look at the price of engines for jeeps, the 2.5 costs twice as much to replace as a 4.0.
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Old 11-15-2010, 12:44 PM   #8
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Chrysler 2.5's are junk....I have bought 10 jeeps in the last year with blown up 2.5's in um. If you look at the price of engines for jeeps, the 2.5 costs twice as much to replace as a 4.0.
I really think that's a pretty rough statement. A well maintained AMC 2.5 will go the distance.

Regardless, I still think either one is a good choice.
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Old 11-15-2010, 12:52 PM   #9
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Sorry but I disagree simply because I have had enough jeeps to make a professional opinion. If you had to swap out as many as I have and seen as many holes in the block as I have seen, I'm sure your tune would change.

The other reason I say that is the cost of used engines. Around here a used 2.5 with 150K on it will still bring 900 dollars. I have seen them upwards of 1500 bucks..whereas a 4.0 with 80K on it is only worth about 500-700. That tells me there is more demand for the 2.5's. And the only reason for the demand is that they blow up more often.
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Old 11-16-2010, 07:47 PM   #10
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I have only heard good things about the 2.5.

As for demand, it can also be tied to supply which would indicate that there aren't many 2.5's that end up on the used market.
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Old 11-16-2010, 08:14 PM   #11
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Fruitland?
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Old 11-16-2010, 10:17 PM   #12
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Reason for the demand ofthe 2.5 is that people know they will get another 100K out of one with 150K. Pete is right, nobody needs to get rid of them ever since they are bulletproof!
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Old 11-16-2010, 10:33 PM   #13
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i have 250,000 miles on my 2.5 amc and all it does is ask for more abuse by far the bette engine. if u dont run it without oil itll run forever
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Old 11-17-2010, 10:50 AM   #14
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I had 240000 on my 22re and was still running good. Only have 140000 on my 2.5 right now so check back in a couple years....
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Old 11-17-2010, 11:28 AM   #15
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I can see that my professional opinion means nothing....I'm done with this thread thanks
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Old 11-17-2010, 12:06 PM   #16
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my last wrangler had the 2.5 and i beat the ever living crap out of it.....for about 10k miles (it already had over 150k)

then it took a shit on the way wheeling. thank god it blew up on the road and not in the forrest.....had a hole in the block about the size of a baseball..

i have moved on to the beastly 4.2
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Old 11-17-2010, 05:25 PM   #17
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If the 2.5 you speak of is one and the same as the wrangler motor then you cant possably be comparing it to a toyota motor with a strait face. You couldnt melt one down and pour it on me. Go with the toyota motor or a 4.0. I got 3 different friends with 2.5s in there jeeps and they (all) have had problems. My 4.0 has 177000 and counting not a problem besides a rear main seal. I have an uncle a cousin and a good friend with toyota trucks and my uncles truck has 300000 plus miles my cousins has 340000 plus and my friends has 360000 plus. Got another buddy with one also but his only has 200000 on it and for a toyota 4 banger that doesnt even qualify as high millage. Dont even entertain the idea of a 2.5 if the amc is the same as the crystler 2.5 wrangler motor. POS period!
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Old 11-17-2010, 05:38 PM   #18
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I guess the consensus is that the 2.5 is junk.. I disagree but if so then the 4.0L is also junk:
"Willem Weertman, in his definitive book, wrote that the 4.0 shared many features of the 2.5 liter overhead valve engine, including the crankshaft journal and crankpin diameters, basic architecture, bore, cylinder spacing, and valvetrain parts."
Read more at Jeep 4.0 liter six cylinder engine
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Old 11-17-2010, 05:44 PM   #19
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Put your head in the sand ubuildwhat? We the minions with 2.5s are humble...



Toyota suck.
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Old 11-17-2010, 05:48 PM   #20
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Quote:
Originally Posted by Jeep_Geek View Post
I guess the consensus is that the 2.5 is junk.. I disagree but if so then the 4.0L is also junk:
"Willem Weertman, in his definitive book, wrote that the 4.0 shared many features of the 2.5 liter overhead valve engine, including the crankshaft journal and crankpin diameters, basic architecture, bore, cylinder spacing, and valvetrain parts."
Read more at Jeep 4.0 liter six cylinder engine
Many people say that the 2.5l is just the 4.0l with two lopped off cylinders.
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Old 11-17-2010, 05:50 PM   #21
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Put your head in the sand ubuildwhat? We the minions with 2.5s are humble...



Toyota suck.

Lol, tell that to my 94 Camry that has 300,000 miles on it. It's still driven daily.
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Old 11-17-2010, 05:53 PM   #22
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I disagree but if so then the 4.0L is also junk

say what?
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Old 11-17-2010, 05:54 PM   #23
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Toyota suck.
wrong, 22re will run forever watch the top gear episode on it if you dont feel like doing actual research
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Old 11-17-2010, 06:01 PM   #24
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I can see that my professional opinion means nothing....I'm done with this thread thanks
be nice to the less mechanically inclined
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Old 11-17-2010, 06:05 PM   #25
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wrong, 22re will run forever watch the top gear episode on it if you dont feel like doing actual research
Are you talking about the one with the red toyota farm truck episode? That was epic.

Sorry...
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Old 11-17-2010, 06:36 PM   #26
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Are you talking about the one with the red toyota farm truck episode? That was epic.

Sorry...
I think so its the one where they froze it etc.
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Old 11-17-2010, 08:54 PM   #27
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toyota suck forinen cars suck by american or a chevy

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